Solar System Test

Front 1

What is unique about Uranus’s rotation?

Back 1

Spins on its side

Front 2

Who first purposed the geocentric model of the solar system?

Back 2

--Ptolemy

Front 3

The sun contains what percentage of the solar system’s mass?

Back 3

99.7%

Front 4

List the planets form closest to farthest from the sun.

Back 4

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto

Front 5

Who proposed the heliocentric model of the solar system?

Back 5

Copernicus

Front 6

Name the outer planets?

Back 6

Jupiter, Saturn, Uranus, Neptune, Pluto

Front 7

Name the inner planets

Back 7

Mercury, Venus, Earth and Mars

Front 8

Which planets have one moon?

Back 8

Earth and Pluto

Front 9

Which planets have rings?

Back 9

Saturn, Jupiter, Uranus, Neptune

Front 10

Copernicus stated what three beliefs of the solar system?

Back 10

--Heliocentric
--Earth spins on its axis
--Moon revolves around the earth

Front 11

Which planets have no moons?

Back 11

Mercury and Venus

Front 12

Which planets have two moons?

Back 12

Mars

Front 13

Pluto is located in which part of the solar system?

Back 13

Kuiper Belt

Front 14

Which planets day is longer then its year?

Back 14

Venus

Front 15

In 1994 what comet slammed into Jupiter?

Back 15

Shoemaker Levi

Front 16

Why does Mercury have the widest temperature range?

Back 16

Very close to sun--during day its facing the sun so it is hot--all night facing away from sun so very cold and atmosphere traps the cold in just as it does with the heat

Front 17

Explain how the balance between the solar wind and polar gravity affected the order of gas giants?

Back 17

Harder to push away so it stayed close by--easier ones were pushed away

Front 18

What are the parts of a comet?

Back 18

-Nucleus
-Coma
-Tail

Front 19

What is the first stage in solar system formation?

Back 19

Nebula

Front 20

Why is the sky black on Mercury?

Back 20

No atmosphere--doesnt scatter light

Front 21

Copernicus concluded that the planets revolve aroudn the sun------

Back 21

retrograde motion

Front 22

Which is commonly known as a shooting star?

Back 22

meteor

Front 23

What are teh two main differences between an asteroid and a meteoroid?

Back 23

Asteroids are bigger and it orbits the sun

Front 24

Explain why Venus is the hottest planet?

Back 24

Atmosphere traps the heat

Front 25

What is the only spacecraft to visit Uranus and Neptune?

Back 25

Voyager 2

Front 26

Where do most meteoroids come from?

Back 26

Melting comets

Front 27

What is the hottest planet in the solar system?

Back 27

Venus

Front 28

What planet is named after the god of the underworld?

Back 28

Pluto

Front 29

Which planet was first to be discovered by telescope?

Back 29

Uranus

Front 30

Explain the geocentric model of the universe.

Back 30

Everything revolves around the earth

Front 31

Explain the heliocentric model fo the solar system

Back 31

Everything revolves around the sun

Front 32

What are the names of Mar's two moons?

Back 32

Phobos and Dimodes

Front 33

Give two main differences between inner and outer planets

Back 33

-Inner planets are rock and outer are gas
-Inner have less moons and outer have more

Front 34

Why do the years get longer farther away from the sun?

Back 34

-Longer trip around the sun
-Travel at a slower speed

Front 35

What two forces keep planets in motion around the sun?

Back 35

-Inertia
-Gravity

Front 36

List the three reasons why NASA is so interested in Mars?

Back 36

-Fossilized bacteria
-Atmosphere is similar to ours
-Polar ice caps and water

Front 37

What are Kepler's three laws of motion?

Back 37

-Sun is not in the middle
-Closer the planets are the faster they orbit
-Elliptical orbit

Front 38

How long does it take earth to rotate once on its axis?

Back 38

23.56 minutes

Front 39

Which directoin does the tail of a comet pont and why?

Back 39

Away from the sun because of the solar wind

Front 40

What year will Halle's comet next visit earth?

Back 40

2061

Front 41

What is the largest known asteroid?

Back 41

Ceres

Front 42

How close is the North Star?

Back 42

4.24 light years

Front 43

How was the solar system formed?

Back 43

-starts as a big ball of gas called a nebula
-gravity contracts the mass
-under so much pressure starts to burn
-once it starts to burn it pushes other materials away
-material cools and forms planet

Front 44

What is a meteor?

Back 44

Meteors are rocks in the atmosphere

Front 45

What is a Meteorite?

Back 45

A meteorite is a rock that hits a planet

Front 46

What is a meteoroid?

Back 46

A Meteoroids is a mass of rock in space

Front 47

What is the distance from teh sun to the Earth?

Back 47

150 million km

Front 48

What is the order of planets largest to smallest?

Back 48

Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury, Pluto

Front 49

Which planets have rings?

Back 49

Jupiter, Saturn, Uranus, Neptune

Front 50

Which planets have no moons?

Back 50

Mercury and Venus

Front 51

Which planets have 1 moon?

Back 51

Pluto and Earth

Front 52

Which planets have 2 or more moons?

Back 52

Mars, Jupiter, Saturn, Uranus, Neptune

Front 53

Name 3 reasons why Mercury has a lot of craters

Back 53

-no atmosphere (atmosphere burns up meteors)
-no water to make them erode
-mercury is close to sun

Front 54

What causes the bands on Jupiter?

Back 54

High Winds

Front 55

What are the Spots on Planets?

Back 55

Hurricanes

Front 56

Where do comets come from?

Back 56

The Oort Cloud and the Kuiper Belt

Front 57

What is an asteroid?

Back 57

A piece of rock similar to but smaller than a planet orbiting the sun.

Front 58

Where are most asteroids found?

Back 58

In the Asteroid belt between Mars and Jupiter

Front 59

What is a comet?

Back 59

Comets- a mass of rock and dust mixed with frozen water, methane and ammonia (gas) “dirty snowballs”